Universal joint vibration noise simulation testboard
By designing a universal joint vibration noise simulation test bench, using a motor to drive the universal joint to rotate, and combining with the movable bracket to adjust the test angle, the problem of difficulty in accurately testing the universal joint NVH performance in the prior art is solved, and efficient and accurate testing results are achieved.
Patent Information
- Application Number
- CN202422218972.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The prior art is difficult to accurately test the vibration noise performance of the universal joint. It is mainly because the universal joint position is special and the high-speed rotating motion state is in a state of driving, so it is difficult to install a vibration sensor. The installation of a microphone near it is affected by engine noise and chassis noise, so the test data is difficult to accurately reflect the universal joint NVH performance.
A universal joint vibration noise simulation test bench was designed, including a bench, a driving motor, an electromagnetic clutch and a universal joint positioning bench. The electromagnetic clutch is driven to rotate through the motor, thereby driving the universal joint rotation. Combined with the movable bracket, the universal joint test angle is adjusted to expand the test range and improve the test effect.
Accurate testing of universal joint vibration noise performance is achieved, overcome the difficulty of motors being unable to accelerate and decelerate quickly, provides extreme working conditions under high power, and improves the practicality and accuracy of the test.
Smart Images
Figure CN222993991U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of universal joint testing, in particular to a universal joint vibration and noise simulation test bench. Background Technique
[0002] The universal joint is a power transmission device between the automobile engine and the driving wheels, which ensures the traction force and vehicle speed necessary under various driving conditions of the automobile, enables the two to change coordinately and has a sufficient change range, and ensures that the left and right driving wheels of the automobile can meet the differential requirements. The quality of this part directly affects the vibration, noise, safety, stability and comfort of the whole vehicle.
[0003] At present, automobile manufacturers use microphones installed at different positions inside and outside the vehicle to measure and record the sound pressure levels under various working conditions such as idling, different vehicle speeds, acceleration and deceleration to evaluate the NVH performance of the universal joint. Due to the special position of the universal joint and its high-speed rotating motion state during vehicle driving, it is difficult to install vibration sensors. Installing a microphone near it is affected by engine noise and chassis noise, and the test data is difficult to accurately reflect the NVH performance of the universal joint. Therefore, the utility model proposes a universal joint vibration and noise simulation test bench here. Content of the Utility Model
[0004] Technical Problem to be Solved
[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide a universal joint vibration and noise simulation test bench.
[0006] Technical Solution
[0007] To achieve the above purpose, the utility model provides the following technical solution: A universal joint vibration and noise simulation test bench, including a bench frame, a driving motor, an electromagnetic clutch and a universal joint positioning table are sequentially arranged on the bench frame, the universal joint is installed between the output end of the electromagnetic clutch and the universal joint positioning table, the universal joint positioning table is arranged on a movable bracket, the movable bracket includes an orbital plate, the bottom of the orbital plate is fixedly connected with an orbital slider, the universal joint positioning table is fixedly installed on the top of the orbital plate, one side of the orbital plate is fixedly connected with a limiting plate, a limiting stud is threadedly connected inside the limiting plate, a rail is also fixedly connected to the bench frame, the orbital slider is slidably installed on the rail, the electromagnetic clutch can be driven to rotate by a motor, and then the universal joint can be driven to rotate to achieve the purpose of testing the universal joint. Moreover, the movable bracket of the present application can move axially along the rail, and then the angle during the universal joint test can be adjusted. The test range is widely applicable, the test effect is better, the practicability of the device can be effectively improved, and the setting of the electromagnetic clutch can overcome the difficulty that the motor cannot accelerate and decelerate quickly and provide the extreme working condition performance under high power.
[0008] Preferably, a first fixing head for fixing a universal joint is installed at the output end of the electromagnetic clutch.
[0009] Preferably, the universal joint positioning table includes a fixed platform frame fixedly installed on the track plate. A fixed block is fixedly connected to the top of the fixed platform frame. A bearing is fixedly installed inside the fixed block, and a second fixing head for fixing a universal joint is installed inside the bearing.
[0010] Preferably, a protective cover covering the outside of the universal joint is further provided on the platform frame.
[0011] Preferably, the protective cover is movably installed on the platform frame.
[0012] Preferably, a support frame for supporting the electromagnetic clutch is provided on the platform frame.
[0013] Beneficial effects:
[0014] Compared with the prior art, the universal joint vibration and noise simulation test bench has the following beneficial effects:
[0015] In the present utility model, the motor can drive the electromagnetic clutch to rotate, and then drive the universal joint to rotate, so as to achieve the purpose of testing the universal joint. Moreover, the movable support of the present application can move axially along the track, and then the angle during the universal joint test can be adjusted. The test range is widely applicable, the test effect is better, the practicability of the device can be effectively improved, and the setting of the electromagnetic clutch can overcome the difficulty that the motor cannot accelerate and decelerate quickly, and provide the extreme working condition performance under high power. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0017] Figure 1 It is a structural schematic diagram of the present utility model;
[0018] Figure 2 It is a structural schematic diagram of the protective cover removed from the present utility model;
[0019] Figure 3 It is an installation structural schematic diagram of the universal joint positioning table of the present utility model;
[0020] Figure 4 It is an installation structural schematic diagram of the movable support of the present utility model;
[0021] Figure 5 Structural schematic diagram of the second fixing head of the present utility model;
[0022] Figure 6 Structural schematic diagram of the protective cover of the present utility model.
[0023] In the figure:
[0024] 1. Bench; 2. Driving motor; 3. Electromagnetic clutch; 4. Universal joint positioning table; 5. Movable bracket; 6. Track; 7. First fixing head; 8. Second fixing head; 9. Protective cover; 10. Support frame; 501. Track plate; 502. Track slider; 503. Limit plate; 504. Limit stud; 401. Fixed bench; 402. Fixed block; 403. Bearing. Specific embodiments
[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0026] Please refer to Figures 1 to 6 As shown, the present utility model provides a technical solution: a universal joint vibration and noise simulation test bench, including a bench 1, on which a driving motor 2, an electromagnetic clutch 3 and a universal joint positioning table 4 are sequentially arranged. A support frame 10 for supporting the electromagnetic clutch 3 is arranged on the bench 1, the electromagnetic clutch 3 is installed on the support frame 10, and the universal joint is installed between the output end of the electromagnetic clutch 3 and the universal joint positioning table 4. The universal joint positioning table 4 is arranged on a movable bracket 5. The movable bracket 5 includes a track plate 501, the bottom of the track plate 501 is fixedly connected with a track slider 502, the universal joint positioning table 4 is fixedly installed on the top of the track plate 501, one side of the track plate 501 is fixedly connected with a limit plate 503, and a limit stud 504 is threadedly connected inside the limit plate 503. A track 6 is also fixedly connected to the bench 1, and the track slider 502 is slidably installed on the track 6. By driving the electromagnetic clutch 3 to rotate through the motor 2, the universal joint can be driven to rotate, so as to achieve the purpose of testing the universal joint. Moreover, the movable bracket 5 of the present application can move axially along the track 6, and thus the angle during the universal joint test can be adjusted. The test range is widely applicable, the test effect is better, the practicability of the device can be effectively improved, and the setting of the electromagnetic clutch 3 can overcome the difficulty that the motor cannot accelerate and decelerate quickly, and provide the extreme working condition performance under high power.
[0027] Please refer specifically to Figure 3 andFigure 4 , a first fixing head 7 for fixing a universal joint is installed at the output end of the electromagnetic clutch 3. The universal joint positioning table 4 includes a fixed platform frame 401 fixedly installed on the track plate 501. A fixed block 402 is fixedly connected to the top of the fixed platform frame 401. A bearing 403 is fixedly installed inside the fixed block 402. A second fixing head 8 for fixing the universal joint is installed inside the bearing 403. The universal joint is installed between the first fixing head 7 and the second fixing head 8.
[0028] Please refer particularly to Figure 1 , a protective cover 9 covering the outside of the universal joint is further provided on the platform frame 1. The protective cover 9 is movably installed on the platform frame 1.
[0029] Working principle: The motor 2 can drive the electromagnetic clutch 3 to rotate, and then drive the universal joint to rotate, so as to achieve the purpose of testing the universal joint. And the movable support 5 of the present application can move axially along the track 6, and then the angle during the universal joint test can be adjusted. When adjusting, first loosen the limit stud 504, and then the movable support 5 can be pushed to move. After adjusting the position, tighten the limit stud 504 to fix the position of the movable support 5.
[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A universal joint vibration and noise simulation test bench, comprising a bench (1), characterized in that: The platform (1) is provided with a driving motor (2), an electromagnetic clutch (3) and a universal joint positioning platform (4) in sequence. The universal joint is installed between the output end of the electromagnetic clutch (3) and the universal joint positioning platform (4). The universal joint positioning platform (4) is pressed on a movable bracket (5). The movable bracket (5) comprises a track plate (501). The bottom of the track plate (501) is fixedly connected to a track slider (502). The universal joint positioning platform (4) is fixedly installed on the top of the track plate (501). One side of the track plate (501) is fixedly connected to a limiting plate (503). The internal thread of the limiting plate (503) is connected to a limiting stud (504). The platform (1) is also fixedly connected to a track (6). The track slider (502) is slidably installed on the track (6).
2. A universal joint vibration and noise simulation test bench according to claim 1, characterized in that: The output end of the electromagnetic clutch (3) is equipped with a first fixing head (7) for fixing the universal joint.
3. The universal joint vibration and noise simulation test bench according to claim 1, characterized in that: The universal joint positioning platform (4) comprises a fixed stand (401) fixedly mounted on a track plate (501), a fixed block (402) fixedly connected to the top of the fixed stand (401), a bearing (403) fixedly mounted inside the fixed block (402), and a second fixed head (8) for fixing the universal joint mounted inside the bearing (403).
4. The universal joint vibration and noise simulation test bench according to claim 1, characterized in that: The platform (1) is also provided with a protective cover (9) which is arranged outside the universal joint.
5. The universal joint vibration and noise simulation test bench according to claim 1, characterized in that: The protective cover (9) is movably mounted on the stand (1).
6. The universal joint vibration and noise simulation test bench according to claim 1, characterized in that: The stand (1) is provided with a support frame (10) for supporting the electromagnetic clutch (3).